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string getservbyport ( int $port , string $protocol ) */ $services=array('80','21','22','23','25','143'); //定义数组 foreach($services as $service) //循环读取内容 { $protocol=getservbyport($service,'tcp'); //返回端口号对应的协议 echo $service.":".$protocol."<br/>n"; //输出结果 } /* int getservbyname ( string $service , string $protocol ) */ $services=array('http','ftp','ssh','telnet','imap', 'smtp','nicname','gopher','finger','pop3','www'); //定义一个数组 foreach($services as $service) //循环读取内容 { $port=getservbyname($service,'tcp'); //获取数组元素对应端口 echo $service.":".$port."<br/>n"; //输出结果 //开源代码phpfensi.com }